Converters | NCV890131

汽车降压开关稳压器，1.2 A，2 MHz，45 V 负载突降，同步输入和同步输出

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概览

NCV890131 是一款固定频率、单片式、降压开关稳压器，用于必须在最高 32 V 的输入电压下运行的汽车、电池联接应用。该稳压器适用于具有低噪声和小外形要求的系统，通常汽车驾驶员信息系统有此要求。NCV890131 能够将典型的 4.5 V 到 18 V 汽车输入电压以高于敏感的 AM 频带的恒定开关频率转换为低至 3.3 V，无需成本高昂的滤波器和 EMI 应对措施。提供两个引脚与时钟或另一个 NCV890131 进行同步开关。NCV890131 还提供汽车电源系统中应具有的若干保护功能，如电流限值、短路保护和高温关断。此外，即使使用较小的电感器值和全陶瓷输出滤波电容器，高开关频率也会产生较低的输出电压纹波，从而成为节省空间的开关稳压器方案。

  • Audio
  • Infotainment
  • Safety - Vision Systems
  • Instrumentation
  • Automotive
  • 2 MHz Free-running Switching Frequency
  • Internal N-Channel Power Switch
  • Low VIN Operation Down to 4.5 V
  • High VIN Operation to 32 V
  • Withstands Load Dump to 45 V
  • Logic level Enable Input Can be Directly Tied to Battery
  • 1.4 A (min) Cycle-by-Cycle Peak Current Limit
  • Short-Circuit Protection enhanced by Frequency Foldback
  • ±1.75% Output Voltage Tolerance
  • Output Voltage Adjustable Down to 0.8 V
  • 1.4 ms Internal Soft-Start
  • Thermal Shutdown (TSD)
  • Auto-synchronizes with Other NCV890101 or to an External Clock

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MSL Temp (°C)

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VCC Min (V)

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NCV890131MWTXG

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Obsolete

CAD Model

Pb

A

H

P

DFN-10

485C

1

260

REEL

3000

N

Step-Down

Current Mode

4.5

45

Adjustable

1.2

-

2200

Price N/A

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